Type-writing machine.



0. B. YAW. I TYPE WRITING MACHINE.

APPLICATION FILED JULY 16,1909.

U) DO NVENTEIR: I zq a 4 1-h5 .A'TTEFQNEY Patented Aug. 6 1912.

8 SHEETBS-HEET l.

G. B. YAW. TYPE WRITING MAGHIIIE. APPLICATION FILED JULY 16, 1909.

Patented Aug. 6,1912.

3 SHEETS-SHEET? 2.

|NVENTUR= (SJ/ Hus ATTCIRNEY v 0, B. YAW.

TYPE WRITING MACHINE. APPLIOATIORIILED JULY 16, 1909.

Patented Aug. 6, 1912.

:; SHEETS-SHEET 3.

WITNESSES:

I "i-lls ATTEJFQNEY Hell.

'tinrrian ermine carnivor @hhftllt.

' GLIO B. YAW, OF ARLINGTON. NEW' JERSEY, ASSIGNOR, BY MESNEASSIGNlVfEN'lS, T0 UNION TYPEWRITER COMPANY, 01? J'ERSEY CITY, NEWJERSEY, A CORPGRATION OF NEW JERSEY.

To all whom it may concern:

Be it known thatI, Ciao B. Yaw, citizen of the United States, andresident of Ailing My invention relates to typewriting ma- 2 chines andmore particularly to type actions and to. means whereby the type barsmay thereof. 1

One ob ect of my lnventlon 1s to provide an eflicient and comparativelysimple mechanisin of the character described and at the same time toprovide type actions which have an easy touch and a uniform leverage andin which a uniform extent of dip of the keys is provided throughout thekeyboard.

A further object of my invention is to provide means whereby the touchof the keys at one part or another of the keyboard may be simultaneouslyaltered, or the touch of the keys may be individually altered, or thetouch of the keys in the entirekey-board may be altered by meansuniversal to all of the actions as may be desired.

To the above and other ends which Wlll hereinafter appear, my inventionconsists tional view of one form of typewriting 1na chine embodying myinvention, the section being taken on the line :crc of Fig. 2, andlooking in the direction of the arrow at said line. Fig. 2 is atransverse sectional view of the same, taken on the line yt of Fig. land looking in the direction of the arrow at said line. Fig. 3 is a.fragmentary detail front view, partly in section, of a portion of thecase shifting mechanism. Fig. 4 is a fragmentary horizontal sectionalview of the machine taken on the line 2- 2 of'Fig. 1,

I have shown my invention embodied in Specification of Letters Patent.

Application filed July 16,

TYPE-WRITING MACHINE.

Patented Aug. 6, 1912.

1909. Serial No. 507,919.

the present instance in a front-strike typewriting machine, in which thetype bars receive shifting movementsto change the case positionsthereof. It should be understood, howev .1, that from certain aspects ofmy invention the features thereof may be embodied in other styles ofmachines and from certain aspects of my invention it is not essentialthat the type bars be shifted to change the case positions thereof.

countered in providing an eiiicient front- Estrike type action in whichtype bars received case shifting movements and the type bars wereactuated by a forward pull from devices situated forward of the type barsegment. By my present construction I ;have overcome certain of thedifficulties heretofore presented.

segment 9 has two concentric stepped faces 10 and 11 apertured at 12 forthe reception of stems 13 of type bar hangers 1%. The two sets of typebar hangers are arranged in two concentric series and the hangers in thetwo series are staggered relatively to each other. From an inspection ofl ig. .t it will be seen that there are two sets of type bars 15 and 16connected respectively with the upper and lower set of type bar hangers.The type bars of the two series alternate and the pivots thereof havewhat is known as the 45 angle arrangement, indicated by the dotted line6 in Fig. 1,. whereby the two sets of type bars, although they are ofdilt'erent lengths extend the same distance forwardly inthe machine. Thetype bar hangers are secured. in place by set screws i? received intapped openings in the segment and extending transversely to the lengthsof the stems of the hangers. Thetype bar s ment 9 is pivoted at 18 torcarwarttly ex.- tending parallel arms or links their forward ends to arock rock shaft 20 like. i or projections 21 and *leretofore greatdifficulty has been 011- be shifted to change thecase positionsi Theframe of the machine comprises side machine in the usual manner. A typebar itltl hand threaded end of the shaft 23 to lock.

operation with anti-friction bearing balls or:

rollers 28. The bearing balls at the left-- hand side of the machine arereceived in a companion cup or hearing 29 threaded onto the end 24 ofthe shaft 23. The cupped bearing member is provided at its outer endwith a cylindrical reduced portion 30 which is received and bearsloosely in a correspond-' ing opening in the left-hand side plate 1 ofthe frame. A nut 31 is received on the leftthe bearing portion 29'in thepositionto whichit may be adjusted along theshaftl At the right-hand endof the shaft 23 is a cup or hearing 32 which cooperates with and forms abearing for the anti-friction balls at the right-hand end of the member20. The bearing- 32 is threaded onto the shaft at 25 and a washer 33 isreceived between the outer end of the bearing and the right-hand sideplate 1 of themachine. The

right-hand end of the shaft 23 extends through an opening in theright-hand side plate 1 and receives a nut 34 on the threaded end 25 ofthe shaft. By this arrangement the bearing 32 may be adjusted and heldfirmly against the right-hand side plate, the side plate being clampedon one sideby the bearing member 32 and on the opposite side by the nut34. The bearing 29 atthe opposite end of the shaft may then be adjustedto take up any lost motion in the bearings, the member-29 being held inthe position to which it is adjusted by the nut 31. The shaft 23 andbearing members 29 and 32 are thus held firmly against rotation and aresecured to the frame of the machine, whereas the frame comprising thehollow rock shaft .20, arms 19, 21 and 22 may turn on the bearing balls28 to afford an eas' case shifting movement of the segment.

' centrally disposed depending arm 35 is secured to the type bar segmentand is pivoted at its lower end, as at 36, to a forwardly extending link37 The forward end of this link is pivoted at 38 to a bracket secured toa horizontal guide plate 39. The link 37 is parallel with the arms 19and is the. same length as said arms so that the type bar segment is inefi'ect mounted on substantially horizontally disposed parallel linksfor case shifting movement, the: forward ends of said links or armsbeing an chored, whereas the rear ends thereof are pivotally connectedto the type bar segment. The set of shorter type bars has itscomparatively longcrank arms connected to a segmental series ofsubstantially horizontally disposed parallel pulllinks 40 which extendforwardly from the type bars and are connected at their forward ends asat 41, to

upright arms 42 of a set of angular levers 43 disposed in verticalparallel planes which extend fore and aft of the machine. These angularlevers are segmentally arranged and are pivoted at 44 to hangers 45secured by screws 46 to a segment 47 fixed by screws 48 to inwardlyprojecting lugs 49 on the side plates of the machine. The angular levershave forwardlyextending arms 50 bifurcated or slotted at their forwardends, as at 51,,for the reception of headed pins 52 which projectlaterally from arms or blocks 53 carried by and rigidly connected to keystems 55, so that each key stem and block are in effect one part and thekey stems and vangular levers are in this sense directly con- -'n'ected'as distlnguished from a connection between the parts eifected throughintermediate actuating links or levers. From an inspection of Fig. 4 itwill be seen that the arms 53 vary in length for purposes which willhereinafter more clearly appear.

Each arm is formed as part of a sleeve 54 which surrounds a verticallydisposed key stem 55 and is secured thereto by a set screw 56. By thesemeans the sleeves 54 may be adjusted on their key stems in an arc-likearrangement corresponding -to the arc-like arrangement of thehorizontally disposed arms of the angular levers with which theyconnect. The longer set of'type bars has its comparatively short crankarms operatively ranged concentrically with the links ,of the shortertype bars, but in an arc of greater radlus and the pull links 40 for thelonger set of type bars are connected to the angular levers at pointsnearer the fulcrums of said levers than are the links for the shorterset of type bars, as will be understood froman inspection of Fig. 1. Aseach upright arm 42 for the lon est set of type bars is made shorterthan t e upright arms for the shorter set of type bars, the angularlevers connected with the longer set of type bars have theirhorizontally disposed arms 50 extended forwardly farther from theirfulorums than the corresponding set of arms 50 of the angular levers forthe shorter type bars. This is in order to provide a stageredarrangement of various parts of the ifferent actions and to compensatefor the variation in the length of the crank arms on the twosets of typebars. .The construction is such as to provide'a uniform leverage and-auniform dip.of;the keys through- 15 W v J with a key stem gulded at itslower end out the system, it being understood that the angularlevers 43for the longer set of type .bars are all of the same size, whereas the-arc-like arrangement of the pull links with which they have tocooperate. In the present instance I have shown four banks of printingkeys 57, each provided in an opening 58 in the guide plate 39, and eachguided at its upper end in an opening in a guide plate 59. From aninspection of Fig. t it will be seen that the arms 53 of the two forwardbanks of keys extend rearwardly from their key stems for connection withthe horizontally disposed arms 50 of the angular levers, whereas thearms connected wlth the keys 1n the two rear banks extend forwardly fromtheir key stems for connection with the horizontal arms of the angularlevers, so that the connection of all ofthe key stems with their angularlevers is on the lines a and b in Fi g. at. This construction provides astaggered arrange ment of the connections between the key stems and thearms 50 and also assists in providing a uniform dip and leverage of thedilferentactions and in compensating for certain of the variations thatexist. between the actions of the two sets. It will also be understoodthat by connecting the angular levers with the key stems in the mannerdescribed an adjustment of the parts of each individual action may. bereadily elfected. Thus, when a type bar is properly seated on itssupporting pad 60, the set screw 56 of the associated type action may beloosened and the key positioned to its proper level in the key-board.The screw 56 may then be tightened and the parts are all properlyadjusted, no further adjustment of the parts being necessary. Moreover,it will be understood that the weight of each key ste n takes up anylost motion that may eXist' between the key and the point of connection4 between the angular lever and its asso ciated pull link.

From an inspectionof Fig. it will be seen that where necessary thehorizontally disposed arms 50 of the angular levers are provided withlateral clearance bends, as indicated at 50* to enable the key stems topass freely bet-ween the horizontal lever arms and to afford clearancebetween the different parts.

From. an inspection of Fig. land from a comparison of the lines c and (Zit will be seenthatthe parallel pull links .0 are all shift links 19 and37, as indicated by the line substantially the same length astheparallel shift links 19 and 3? and are parallel therewith, and that theforward ends of the shift links where they connect at all with theangular levers, are in the same vertical transverse plane as theanchored ends of the shift links 19 and 37 as indicated by the line 0,whereas the rear ends of the pull links 40 are in substantially the samevertical transverse plane as the rear pivoted ends of the (Z. By thisarrangement a shifting movement of the segment may be elfected withoutaltering the parallelism maintained between the pull links 40 and theshift links 19 hnd 3T. In short, this parallelism is maintainedwhetherthe type bar segment be in the upper or in the lower caseposition. In the shifting movement of the segment the rear ends of thepull links l0 shift with the segment, the links turning on theirpivotalpoints of connection ell with the angular levers while the angularlevers and the key stems, which are carried by a fixed portion of themachine, remain at rest.

Each angular lever is connected at 61 with a contractile restoringspring 62, the opposite end of the spring having its convolutes threadedonto an eXteriorly and interiorly threaded nut63. A headed screwGetpasses loosely through an opening 65 in a segmental adjusting memberor plate 66. By turning the screw 6% it will be threaded into or out ofthe associated nut 63, thus increasing or decreasing the tension exerted100 by the restoring spring 62, thereby giving an individual adjustmentfor each type action to vary its touch. The screws 64 are arranged intwo concentric segmental series the arcs of which have radii ofdifferent lengths and the points of connection 61 between the restoringsprings and the upright arms of the angular levers are at differentdistances from the fulcrums 44 of said levers. Moreover, the screws andsprings are staggered as indicated in Fig. 2. This. disposition of thesprings and their adjusting screws provides ample room for the restoringsprings so that the requisite number of springs fora full complement 'oftype actions may be provided in the comparatively small arc in whichthey should be mounted without unduly crowding the springs and theiradjusting means and without any liability of the springs conflicting onewith another. Furthermore, the springs are mounted so as to exerttheirforce on the levers in accordance with the variations in the length ofthe upright arms thereof. It is sometimes desirable to provide a harder125 or a lighter touch at one part or'another of v the keyboard,depending upon the operator. Thus, in some cases an operator has aheavier stroke with the right-hand than with the left and it isdesirable to provide a 4130 slightly harder touch at the right-hand sideof the key-board than at the left. In order to provide a construction bywhich the keys at different portions of the key-board may be given aharder or lighter touch without adjusting each type action individuallyor the restoring springs therefor. I have provided a construction bywhich the ends stated may .be readily accomplished. Thus, the segmentaladjusting member or plate 66 is tapped to receive a centrally disposedscrew 67 and two terminal screws 68. The two screws 68 are arranged nearthe upper ends of the segment, whereas the screw 67 is arranged at thecentral portion thereof, as indicated in Figs. 1 and 2. The screws 68are each reduced at its forward end as indicated at 69 and is looselyreceived in an opening in the fixed segmental plate 47, the shoulderformed by the reduced portion bearing against the rear ftlCBnOf theplate 47. The centrally disposed screw 67 bears at its forward endagainst the rear flat face of the plate 47, thus forming a three pointbearing for the plate 66. In this manner the segmental adjusting plate66 is supported in place by the fixed segment 47, the pressure of thesprings 62 maintaining the screws in contactwith the fixed se ment. Byadjusting a screw 68 at one si e r of the .machlne the segmentaladjusting plate ormember 66 's moved at one end accordingly nearer to orfarther from the fixed segment 47, thereby varying the pressure ofthe-springs 62 at the end. of the adjusting member 66 which has beenadjusted. The variation in the adjustment of the springs 62 is greatestat or near the point of'adjustment of the plate 66 and graduallydiminishes as the opposite end or side of the plateis reached,where thesprings will not be affected or appreciably' affected by the adjustmentof the opposite end of the adjusting plate. If, on the other hand, it isdesired to vary the tension of the springs for those keys which are atthe center of the key-board without affecting, or appreciably afiecting,the springs for the keys at the sides of the key-board, an adjustment ofthescrew 67 may be efiected. Then again, if it is desired to edect auniversal adjustment in the pressure of all the springs to a like degreeso that a variation in the touch to a like degree may beeffectedthroughout the key board, then it is merely necessary to adjustall three of the screws 67 and 68 in a like manner, thus effecting auniversal adjustment of the restoring springs throughout the system toalike degree. It will be seen, therefore, that I have provided meanswhereby the tension of the springs 62 may be individually adjusted tovary the touch, or whereby an increase or decrease in the ressure of aplurality of the springs may e simultaneously effected Without affectingthe others, in order to provide for a variation in the touch atdifferent parts of the key-board, or whereby the restoring springs forthe entire system of type-actions may be adjusted by universal means toa like degree, so thatthe touch of the keys throughout the system may bevaried alike.

From certain aspects of my invention any suitable means may be employedfor effecting a case shifting movement of the segment. However, Ipreferably provide means whereby the type bar segment is normallymaintained in the elevated position and is shifted downwardly for uppercase writing.

jecting pin 71 ona depending arm 21- or' 22 or the shiftable frame. Theopposite end of each spring has its convolutes threaded on exteriorthreads of a nut 72 which nut is likewise interiorly threaded forcooperation with a headed screw 73 which passes freely through anopening in an inwardly extending projection or lug 74 on a side plate 1of the frame. These lugs are each recessed as at 75 to receive theprolongation 76 of a pivot 18 which connects the rear ends of the arms19 to the type bar segment.

The upper end of each lug 74 is tapped to receive a screw stop 77, thelower end ofwhich extends into-the recess 7 in the associated lug andcooperates with a pin 76 to limit the shifting movement of the segmentin one direction. Each pin 76 also cooperates with a stop 78 to limitthe shifting movement of the segment in an opposite direction. Thesprings thus exert a pressureto maintain the segment in the elevatedposition shown in Fig. 1 with the projecting ends 76 of the pivots 18 incontact with the screw stops 77.

In order to shift the segment downwardly from the lower to the uppercase position and to lock it in such shifted position when desired Ihave provided an angular lever 79 pivoted to the left-hand side plate 1of the rame on a shouldered pivot screw 80. The forward end of the lever79 isbifurcated at 81 to receive -a laterally projecting pin 82 on acollar 83 which is fixed to a stem 84 of Thus, contractile springs 70are ,each secured at one end to a laterally proa temporary shift key 85.Afnupwardly wardly extending link 88 is pivoted on a ,7 shouldered screwat 89 to the upright arm of the angular shift lever 79 and extendsrearwardly therefrom and is slotted at its rear end as indicated at 90.This slot recelves a laterally projecting in 91 which projects from anupright 100 'ng lever 92 pivoted on a shouldered pivot screw 93 to theleft-hand side plate 10f the frame. The

upper end of the locking lever is provided with a hook-like portion 94which has a flat face 95 that bears against a pin 96 on the left-handshift link or arm 19 when the segment is in the normal position shown inFig. 1. When, however, the type bar segment is shifted to the lowermostposition the hook-like end of the locking lever is, under certainconditions which will hereinafter appear, moved by a spring 97 over thepin 96 and locks the segment in its lowermost shifted position. Theshift key 85 is situated at the left-hand side of the keyboard and is inthe nature of a temporary shift key employed when it is desired'to shiftthe segment to write one or more upper case characters, the segmentbeing i'estored to normal position when pressure on,

the key 85 is released. lVhen the shift key 85 is depressed it iseffective to move the arm 21 forwardly, thus movlng the segnent from theelevated position to the lower position to change the case position ofthe type bars. During this depression of thekey 85 the link 88 receivesa forward movement. It will be observed from Fig. 1 that the pin 91 isatthe forward end of the slot 90 in the link so that during the caseshifting movement, effected by the depression of a key 85, a lost motionwill be effected between the link 88 and the locking lever 92. At the"completion of the case shifting movement effected by a depression ofthe key 85, the rear end of the slot 90 will be brought into cooperationwith the pin 91 so as to prevent the locking lever from movingrearwardly to bring its hooklike portion 94 over the pin 96, thusretain-,

ing the locking lever out of locking position so that at this time thesegment is not locked and is free to return to normal position whenpressure is released on'the shift key 85. Thus, as pressure on the shiftkey 85 is released the segment will be moved upwardly by the springs 70and the locking lever will be retained in its unlocked p'osition'untilsuch time as the pin 96 is moved into cooperation with the flat face 95of the locking lever which prevents a rearward movement of the lockinglever under the pressure of the spring 97. I have also provided attheright-hand side of the keyboard a permanent shift key or locking shiftkey connected to a key stem 98 connected to a shift lever 99 in the samemanner that the key stem 84 of the temporary shift key is connected toits shift lever.

Moreover, the shift lever 99 is constructed and mounted in the samemanner as the shift lever -79 but there is no connection with a link andlever corresponding to the link 88 and the locking lever 92. Thepermauent shift lever 99 is merely provided with a laterally projectinpin l00'which coiloerates with the depending shift arm 22 of the shiftframe and is effective, on the depression of the right-hand permanentshift key, to move the arm 22 forwardly, thereby effecting a ddwnwardshift of the type bar segment. At this time the arm 21 will moveforwardly, being rigidly connected with the arm 22, without affectingthe shift key- 85 and the parts connected therewith at the opposite sideof the ma chine. The lever 79 and link 88 being in the normal positionshown. in Fig. 1 when the right-hand or permanent shift key isdepressed, enables the pin 91 to move to the right in the slot 90 as theparts are shown in Fig. 1, so that the locking lever is released and atthis time is free to move rear .wardl'y and hook over the pin 96 andthus retain indefinitely the segment in its shifted position. lease thesegment from its shifted position it is merely necessary to depress thetemporary shift key 85 and the temporary shift key is elfective to movethe locking lever 92 back to the unlocking position as soon as the pin91 is seated inlthe rear end of the slot 90 ofthe link 88 and todisengage the locking lever 92 from the pin 90, thus enabling thesegment to be restored to its normal position.

The pad 60 on which the free ends of the type bars are supportedreceives its support from a segmental strip 101 connected at its ends toforwardly extending bracket arms 102 secured by screws 103 to the typebar segment so that the type rest will be shifted with the type barsegment in its case shifting movements.

it will be observed that so far as either of the two series of typebars, connecting rods, bell cranks and key stems is concerned, theconstruction embodies type bars that are arranged ina segmental series;a series of forwardly extending 'pull links and bell cranks that arelikewise segmentally arranged; that the bell cranks have their pivots orfulcra all arranged in substantially lever arms are of the same lengthand terminate at a single plane transversely of the .machine aboutcentrally of the keyboard;

that there are a plurality of transverse rows or banks of key stemswhich have a vertically sliding movement; that there are a plurality ofcouplings or connecting arms extending different distances fromdifferent rows or banks of key stems; andthat such couplings orconnections are attached to said. lever arms in substantially a singlevertical plane across the machine and parallel with the rows of keystems and at equal distances from the fulera of 'said lever arms so thatthe keys in different transverse rows have Should the operator desire toresubstantially the same leverage on all of said series of type bars,whereby there is a uniform or substantially uniform leverage throughoutthe series. From certain aspects of my invention it is immaterialWhether the parts referred to above are arranged in a single series, orin .a double series as herein shown.

Various changes may be made without departing from the spirit of myinvention.

What I claim as new and desire to secure by- Letters Patent, is

1. In a front-strike typewriting machine, the combination of a series ofsegmentally arranged upwardly and rearwardly striking type bars, aseries of time bar actuating links connected directly with and extendingforwardly from said type bars, a series of angular levers having uprightarms connected with saidllinks and also having forwardly extending armsprojecting to the keyboard 0f the machine, a series of key stemsdirectly connected with the forwardly extending arms of the angularlevers, and parallel shift 5 links or arms which are substantiallyparallel-with the actuating links and on which the series of type barsare shifted and by which they are guided in their shifting movements,the actuating links and shift links being substantially coextensive inlength.

2. In a front-strike typewriting machine,

the combination of a shiftable type bar segment, a series of segmentallyarranged upwardly and rearwardly striking type bars mounted on saidsegment, a series of type bar actuating links extending forwardly fromsaid type bars, a series of segmentally arranged angular levers havingupright arms connected with said links and also having forwardlyextending arms, a series of key stems separate from but directlyconnected with the forwardly extending arms of the angular levers atdifferent elevations,

' and parallel shift links or arms which are substantially parallel withthe actuating links and on which the type bar segment is shifted and bywhich it is guided.

- 3. In a front-strike typewriting machine,

'50 the combination of a series of segmentally arranged upwardly andrearwardly striking type bars, a series of type bar actuating linksdirectly connected with and extending forwardly from said type bars, aseries of angular levers having upright arms connected with said linksand also having forwardly extending arms, a series of key stems distinctfrom said angular levers, means cooperative with each of said key stemsat the upper and lower end portions thereof for gulding it, andadjustable means for directly connecting said key stems with the forwardarms of said angular levers.

' 4. In a front-strike typewriting machine,

the combination of a series of segmentally extending forwardly tarranged upwardly and rearwardly striking type bars, aseries of type baractuating links extending forwardly therefrom, a series of angularlevers having upright armsconnected with said links and also havingforwardly extending' arms, a series of key stems, and a series ofconnecting devices each rigidly and adjustably connected to a key stemand connecting directly with a forwardly extending arm of one of saidangular levers. 5; In a front-strike typewriting machine,

. the combination of a series of segmentally arranged upwardly andrearwardly' striking type bars, a series of ty e bar actuating linksangular levers having upright arms connected with said links and alsohaving forwardly extending arms, a series of key stems, a series ofblocks each adjustably secured to a' key stem, and pin and slot com 5nections between said blocks and the forw wardly extending arms of saidangular levers. Q

6. In a'front-strike typewriting machine, the combination of. a seriesof segmentally arranged upwardly and rearwardly striking type bars, aseries of type bar actuating links extending forwardly therefrom, aseries'of angular levers having upright arms connected with said linksand also having for- .5 wardly extending arms, a series of key stems, aseriesof blocks, set screws for connecting the blocks to said key stemsand for affording arelative up and down adjustment between. each keystem and the block connected therewith, and. a pin carried by each ofsaid blocks and received in a slot in the forwardly extending arm of oneof said angular levers.

7. Ina frontstrike typewriting machine, the combination of a shiftabletype bar segment, a series ofsegmentaliy'arranged upwardly andrearwardly striking type bars carried by said segment, a series of typebar actuating links connected directly with and extending forward fromsaid type bars, a series of angular type bar actuating levers carried bya fixed portion of the machine and connected to the forward ends of saidactuating links, a series of key stems distinct from said angularlevers, and adjustable deviceseach directly connecting a key stem withone of said angular levers.

, 8. In a front-strike typewritingmachine, the combination of ashiftable type bar segment, a series of segment-ally arranged upwardlyand rearwardly striking type bars carried by said segment, a series oftype bar actuating links extending forward from said type bars, a seriesof angular type bar 12 actuating levers carried bya fixed portion of themachine and connected to the forward ends of said actuatin links, aseries of key s each adjustably and stems, a series of bloc a pin andrigidly connected to a key stem,

erefrom, a series of 80 I shifted, and key actuated means for shiftingsaid segment.

' 9. In a frontstrike typewriting machine, the combination of ashiftable type bar seg ment, a series of'segmentally arranged upwardlyand rearwardly striking type bars carried by said segment, a series oftype bar actuating links extending forward from said type bars, a seriesof angular type bar actuating levers carried by a fixed portion of themachine and having upright arms connected to the forward ends of saidactuating links and also having forwardly extending arms, a series ofkey stems, a series of blocks,

set screws for connecting the blocks to said key stems and, foraffording a relative up and down adjustment between each key stem andthe block connected therewith, a pin carried by each blnck and receivedina slot in a forwardly extending arm of one of said angular levers,parallel shift links substantially parallel with said actuating linksand on which 'said segmentis shifted, and key actuated means forshifting said segment.

10. In a typewriting machine, the combination of a type bar, anactuating lever therefor, a key stem'carryinga key, a connecting devicefor rigidly and adjustably connecting said key stem with said type baractuating lever, and means for affording a vertical adjustment of saidkey stem relatively to the type bar actuating lever and relatively tothe said connecting device, whereby the key stem with the key headcarried thereby may be vertically adjusted. 11. In a typewritingmachine, the combination of a type bar, an actuating device therefor, akey stem, a block adjustably sccured to said key stem, and a pin andslot connection between said block and type bar actuating device.

12. In a typewrit-ing machine, the combi nation of a type bar, anactuating device therefor, a key stem, a block, a set screw forconnecting said block and key stem and for affording a relative up anddown adjustment between the key stem and block, and a pin c arried bysaid block and received in a slot in said type bar actuating device.

13. In a front-strike typewriting machine,

the combination of a series of segmentally arranged upwardly andrear'wardly striking type bars, a series of actuating links that extendforwardly from said type bars, a series of angular levers pivoted onfixed fulcrums, upper and lower perforated guide plates, key stems thatwork in the perforations in said guide plates, and adjustable means bywhich the key stems are adjustablyand directly connected to said angularlevers.

14. In a front-strike typewriting machine, the combination of a seriesof segmentally arranged upwardly and rearwardly striking type bars, aseries of actuat: ing links that extend forwardly from said type bars, aseries of angular levers of a substantially uniform size and mountedatgradually higher elevations from the center to the sides of themachine, upper and lower perforated guide plates, and key stems thatwork in the perforations in said guide plates and which are directlyconnected to saidangular levers.

15. In a front-strike typewriting machine, the combination of a seriesof segmentally arranged upwardly and rearwardly striking type bars, aseries of actuating links that extend forwardly from said type bars, a'series of angular levers of a substantiallyuniform size, upper and lowerperforated guide plates, key stems that work in the perforations in saidguide plates and which are separate from but are directly connected tosaid angular levers by pin and slot connections.

16. In ,a front-strike t-ypewriting machine, the combination of a seriesof segmentally arranged upwardly and rear wardly striking type bars, ashiftable segment on which said type bars are mounted,

a series of actuating links that extendforwardly from said type bars, aseries of angular levers mounted on a fixed portion of the machine,upper and lower perforated fixed guide plates, key stems that work inthe perforations in said guide plates and which are directly connectedto said angular- 17. In a front-strike .typewriting ma-' chine, thecombination of type bars pivoted in two concentric arcs one forward ofand having'a shorter radius than the other, two

sets of links whichv extend forwardly from said type bars, the saidlinks being arranged in two concentric arcs, one of which arcs has ashorter radius than the other, two sets of angular levers pivoted in anarc the upright arms of which levers terminate in arcs corresponding tothe arrangement of said links and which arms are connected to saidextend forwardlyfrom said type bars, the

' than the other, two sets of segmentally arranged angular leverspivoted on a fixed part of the machine and the upright arms of whichlover's terminate in arcs corresponding to the arrangement of said linksand which arms are connected to said links, key stems directly connectedto said angular levers, and parallel shift arms or links; on which saidsegment is shifted, said links being substantially parallel with saidactuating links when the segment is in both the upper and lower casepositions.- a

19. In a front-strike typewriting machine, the combination of a seriesof angular levers having forwardly projecting arms and upwardlyprojecting arms, a series of key stems which areconnected to said forwardly projecting arms and certain of which key stems work between the.said forwardly projecting arms, a series of upwardly and rearwardlystriking type bars, and a series of actuating links between saidupwardly projecting arms and the type bars. 20. In a typewritingmachine, the combination of a series of angular levers having forwardlyprojecting arms with clearance bends therein and upwardly projectingarms, a series of key stems which are connected to said forwardlyprojecting arms and certain of which key stems work between the saidforwardly projecting arms, upper and lower perforated guide plates inwhich said key stems work in the perforations therein,

:a series.of type bars, and a series of actuatlinks between said inglinks between said upwardly projecting arms and the type bars.

21. In a typewriting machine, the coinbinationof a serles of angularlevers hav: ing forwardly projecting arms and upwardly projecting arms,a series of key stems which are connected to said forwardly projectinarms and certain of which key stems worli between the said forwardlyprojecting arms, a series of type bars, a series of actuating upwardlyprojecting arms a shiftable segment which andthe type bars,

parallel shift carries said type bars, and

links or arms which are substantially parallel with said actuating linkswhen the segment is iii-either the upper or lower case position. 1 i v22. In 'a front-strike typewriting machine, the combination of a seriesof angular levers pivoted to a fixed portion of the machine and havingforwardly projecting arms and upwardly projecting-arms, a series of keystems which are connected directly to said forwardly projecting arms andcertain of which key stems Work between the said for ups wardly proecting arms, a series-of wardly and rearwardly" strikingtype bars,

a series of actuating links betweensaid 1P1,

vthe machine,

springs wardly projecting arms and the type bars, a shiftable segmentwhich carries said type bars, parallel shift links or arms which aresubstantially parallel with saidactuating links when the segment is ineither the up per or lower case position, and means for shifting saidsegment. i

23. In a the combination of a series of angular levers pivoted-to afixed portion of. the machine and having forwardly projecting arms withfront-strike typewriting machine,

clearance bends therein and upwardly projecting arms, a series of keystems which are connected directly to said forwardly projecting arms andcertain of which key stems work between the said forwardly projectingarms, upper and lower perforated guide plates in which said key stemswork in the perforations therein, a series of upwardly and rearwardlystriking type bars, a series of actuating links between said upwardlyprojecting arms and the type bars,

a shiftable segment which carries said type extending to the keyboard ofthe machine,

links directly connecting said type bars and angular levers, and keystems separate from but connected directly to said angular levers.

25. In a front-strike typewriting machine, the combination of a seriesof upwardly and rearwardly striking type bars, a series of angularlevers which vibrate in vertical parallel planes that extend fore andaft of the two sets of the arms. of said angular levers being ofproportionately the same size. throughout the series, actuating linkswhich extend fore andaft of the ma-' chine between said type bars andangular levers, key stems separate from but .connected directly to saidangular le gers, a shiftab a segment which carries saif'df-type bars,and shift links or arms on which-said segment is mounted, said shiftlinks being su stantially, co-extensive in length with id actuatin linksand substantially parallel with sai actuating links'when the segment isin either the upper or lower case posit-ion. V

26. In a typewriting machine, the combination ofa series of typeactions; restoring ously increasing or decreasing the-pressure ofsome'pfsaidsprings without affecting the others, said means comprising aplate or frame to which said restoring springs are therefor; and meansfor simultane'--" the combination of a series of type actions includingupwardly and 'rearwardly striking type bars; restoring springs'for saidtype actions; and means for simultaneously increasing or decreasing thepressure of some of said springs Without affecting the others, saidmeans including a substantially vertically dlsposed se mental plate towhlch said restoring sprlngs are connected, and

individually adjustable means coeperative withsaid segmental plate foraffording a swinging adjustment of the plate at different portionsthereof.

28. In a typewriting machine, the combination of a series of typeactions; restoring springs therefor; and means for simultaneouslyincreasing or decreasing the pressure of some of said springs withoutaffecting theothers, said means including a plate or frame to which saidsprings are connected, and individual 'mea-ns for effecting a swingingadjustment of said plate around different axes which are at angles toeach other.

'29. In a typewriting machine, the combination of a series of typeactions, restoring springs therefor, a plate or frame to which saidsprings are connected, and means for adjustin the center of the plate orframe independently of the ends to effect a variaplate or frame withoutaffecting the springs connected to the end portions of the plate tioninthe pressure of those springs which are connected at and near thecenter of the or frame. i

30. In a typewriting machine, thelcombination of a series of typeactions, restoring springs therefor, a plate or frame to-wlnch saldsprlngs are connected, and lndlvldual means for adjusting either end ofthe plate orframe independently of the other or for adjusting the plateor frame at the center thereof independently of the ends as may bedesired, whereby the springs connected with i the plate or. frame ateither end or at the center may be adjusted independently of the othersor whereby all of the springs may be adjusted to a like extent.

31. In a typewriting machine, the combination of a series ofitypeactions, restoring springs therefor, a plate or frame to which saidsprings are connected, individual means for adjusting either end of theplate orvariation in the pressure exerted by said springs. i

32. In a typewriting machine, the combination of a series of typeactions, a series of restoring springs each connected at one end to amember of the associated type action, a segmental plateor frame adaptedto receive a bodily mr. vement and to which the opposite end of eachspring is connected, and. three individually adjustable screws by whichsaid plate or frame is supported and.

adjusted, one of said screws being located near each end of thesegmental plate or frame and one near the middle thereof;

33.-In a typewriting machine, the combination of a series of typeactions, a series of restoring springs each connected at one end to amember of the associated type action,'a

segmental plate or frame adapted to receive a bodily movement and towhich the opposite end of said screw is connected, and threeindividually adjustable screws by which said plate or frame is supportedand adjusted, one of said screws being located near each end of thesegmental plate or frame and one near the middle thereof, said screwsbeing threaded into the said. segmental plate or frame and bearing attheir free ends against a fixed part ofthe machine and resisting thepressure of said springs. I

34-. In a typewriting machine, the combination ofa platen, type bars,and means for effecting a relative case shifting movement between saidtype'bars and platen, said case shifting means comprising a shift frame,a fixed shaft that extends through said shift frame, roller bearings onsaid shaft, roller bearingspn the. shift frame, and antifriction rollersbetween said bearings for supporting said shift frame.-

35. In a typewriting machine, the combination of a platen, type bars,and means for effecting a relative case shifting movement between saidtype bars and platen, said case shifting means comprising a shift frame,a shaft det-achably fixed to the frame of the machine, roller bearingsadjustable on said shaft, roller hearings on the shift frame, andanti-friction rollers between said bearings for supporting said shiftframe.

36. In a typewriting machine, the combiarms and connected to the part tobe shifted,

and key actuated means for shifting the part to be shifted on saidarms'and-link and for turning said shift frame.

37. In a typewriting machine, the? comthrough of said shaft, ballbearings between said shaft and said shiftframe, means .for

adjusting said ball bearings, a connectionbetween said shift frame andthe part to be shifted, and keyactuated means for shifting said frame.

5 38. In a typewriting machine, the combination of a platen, type bars,and means for effecting a relative-case shiftingmove lnent between saidtype bars and platen. said case shifting means comprising a shift framepivoted to the frame of the machine and having arms directly connectedwith the part to be shifted and alsohaving actuating arms at oppositesides of the machine, angular shift levers cooperative directly with,said actuating arms, a locking lever, a spring which tends-to force thelocking leverinto engagement with said shift-frame, and a lost motionconnection between one of said angular shift levers and said lockinglever, whereby onthe actuation of one of said shift levers the lockinglever will be held out of operation and on the actuation of the other ofsaid levers the locking lever is rendered effective. 39. In. atypewriting machine, the combination of a platen, type bars, and meansfor eifecting a relative ease shifting movement between said typebarsand platen, said case shifting means comprising a shift frame pivoted tothe frame of the machine and having arms directly connected with thepart to be shifted and also having actuating arms at opposite sides ofthe machine, angular shift levers cotiperative directly with saidactuating arms, a locking lever, a V spring which tends to force thelocking lever into engagement with said shift frame, a link pivoted toone of said angular shift levers and having a pin and slot connectionwith said locking lever, and separate keys at opposite sides of thekey-board for'actuating said angular levers, whereby on the .actuationof one of said shift levers the look ing lever will be held out ofoperation and on the actuation of the other of said levers the lockinglever is rendered eif'cctive.

4:0. In a front strike typewriting machine, the combination with aplaten, of a series of segmentally arranged type bars, a

series of forwardly extending pull links of substantially the samelengtl'i and connected at their rear ends to said type bars, a seriesof.segnientally arranged bell cranks hav ing their pivots or fulcra allarranged in substantially the same vertical plane, and

, plane and having one set of the arms therea series of key stemsarranged in different banks; and intermediate actuating -connec-' tionsbetweensaid key stems and-type bars, said connections comprising aseries of angular levers having their pivots arranged in a singletransverse plane and having one set of the arms'thereof extending to thekeyboard of the machine, said angular levers being separate from butconnected'to the key stems, and neans by which direct connection iseffected between the key stems and angular levers in a single planeacross the machine.

'42. Ina front strike typewriti'ng ma- 90,

chine, the combination of a series of up wardly and rearwardly strikingtype bars; a. series; of key stems arranged in dilierent banks; andintermediate actuating connections between said key stems and type bars,5

said connections comprising a series, of segmentally arranged angularlevers having. their pivots arranged in a single transverse of extendingto the keyboard of the ma- 10d chine, said angular levers being separatefrom but connected to the key stems, and arms extending varyingdistances, fore and aft of the machine from said. stems andssby whichdirect connection may be e'fiected between 'the key stems and angularlevers.

43. In a front strike typewriting machine, the combination of a seriesof up wardly and rearwardly striking typebars; a series of key stemsarranged in different banks; and intermediate actuating connectionsbetween said key stems and type bars, said connections comprising twoseries of angular levers each series having their pivotsarranged in asingle transverse plane and having one set of the arms thereof extendingto the keyboard of the machine, said angular levers being separate frombut connected to the key stenis, and means by which direct connectionis' effected ,between certain of the key stems indifferent banks andangular levers of each series in a singleg plane across the machine sothat the points of connection between the two series of an gular levers.and' the key stems are in two parallel planes across the machine.

4A. Ina typewriting machine, thecom'bination with a series of type bars,a series of forwardly projecting lever. arms connected to said typebars, a plurality of 130 of lever arms projecting forwardly to the' sameextent and operatively connected to said type bars, a plurality oftransverse rows of stem keys, and a series of couplings or connectionsextending from said stem keys to the terminal ends of the lever 'armsand there connected in a row substantially parallel with said rows ofstem keys, Whereby equal leverage is obtained for all of said lever armsand type barsi 46. In a typewriting machine, the combination of a seriesof type bars, a series of forwardly projecting lever armsof equal lengthand terminating substantially in a single plane transversely of thekeyboard, a plurality of-transverse parallel rows of sliding key stems,and a plurality of couplingsof diiferent lengths extending 10111 saidkey stems t-o the terminal ends of said lever arms and connected theretoat substantially equal distances from-the'fulcra of said lever arms;whereby though the transverse rows of key-' stems are arranged atdiflerent distances from the fulcra of said levers they are allconnected at substantially the same distance from the said fulcra thusproviding for equal leverage in differentroWsorbanks'of keys. v

4:7. In-a typewriting machine, the cgmbination of a series oftype bars,a series of bell crank levers having upwardly extend ing and forwardlyextending arms, a series of links connecting the type bars with theupwardly extending arms, a plurality of transverse rows of stem keys,and a. plurality of couplings connecting said stein keys with saidforwardly extending arms at substantially the same 1 distance from thefulcra of said levers.

Signed at the borough of Manhattan, city I of New York; in the county ofNew York and State of New York this 15th day-of July A. D. 1909.'

oL'Io B. YAW; \Vitnessesf CHARLES SMITH,

' J. -DEEVES.

Copies 'of this patentz'nay be obtained for fivecents' eaeii, byaddressing the Commissioner of Iatentl' Washington,

